Machine for cutting off beads.



W. C. STEVEN MACHINE FOR CUTTING on BEADS.

APPLICATION FILED SEPT. 27, 19;3.

Patented May 2, 1916 2 SHEE S-SHEET 1.

1111/6 f rat";

W. C. STEVENS.

MACHl NE FOR CUTTING OFF BEADS.

APPLICATION FILED SEPT. 21, 1913.

1,181 ,354. Patented May 2, 1916 a 2 STIEETS-$HEET 2- UNITED STATES PATENT OFFICE.

WILLIAM C. STEVENS, 0F AKRON, OHIO, ASSIGNQR TO THE FIBESTONE TIRE 86 RUBBER COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO.

MIACHINE IUR. CUTTING OFF BEADS.

Specification of Letters Patent.

Patented May 2, 1916.

To all whom it may concern Be it known that I, lVniLmu C. S'rnvnxs,

a citizen of the United States, residing at Akron, iu the county of Summit and State of ()hio. ha viinvented certain new and use ful Improvements in Machines for Cutting ()lf Beads, of which the follmving is a specificati-on.

It is customary in the case of old and worn. out or defective tires to treat the same in order to regain the rubber therein for use in making other tires. The head of such tires, however, contains such a small perecntage of rubber that it is not available from an economical standpoint and for this reason the head is customarily removed from the old tire prior'to treatment for salvage of the rubber in the latter.

This invention has for its object the provision of novel and efficientmeans for cut ting the head from old tires.

In order that the invention may be readily understood a preferred embodiment of the same isset forth in the accompanying drawings and in the detailed description based thereon. As, however, the invention is capable of embodiment in other and varied com structional forms the drawing and description are to be construed in an illustrative and not in an unnecessarily limiting sense.

In the drawingsFigurc 1 is a side elevation of such a machine; Fig. 2 is a rear clevation of the same; and Fig. 3 is a vertical section throlp h the machine.

Having rdterenec to the drawing in de tail, upon the machine frame. ll is suitably jourualed a, drive shaft l2 having fixed thereon a miter gear H5 in mesh with a similar gear 14 carried by a couutcrslml't if. The counter shaft l5 is provided with worms Hi and l7 ol' similar pitch, one having a right hand and the other a left hand thread. Suitably jOlll'nflllXl in the standards 18, 18 of the frame aro'a pair of driven shalts 1'9 and .20 having fixed thereon i'esptu'tivoly worm wheels '31 and 29 in mesh resmwtively with the worms 1*: and l7.

The driven shaft if) has mounted tlui-re im a disk 23 having a peripheral cutting portion 21 hevelml upon one face at 25 to pro vide a continuous knife edge: .56, the front are disposed in overlapping shearing relation as clearly shown in the drawing, the disks being driven in opposite directions at a uniform peripheral speed by means of the worm gear from the countershaft 15.

In operation the length of tire is fed, as illustrated in Fig. 3, between the two disks, the lower serrated disk engaging the tire with its serrations and feeding the same forward positively while at the same time the sharpened edges of the teeth cooperate with the continuous sharpened edge of the disk 23 to shear the head 31 from the body 32 of the tire.

By the employment of the two disks, one having a continuous knife edge and the other a serrated cutting edge in the relation Shown and descrihed, -thc tire is fed positively and prevented from buckling or jamming while the cut is accomplished by a smooth shearing action wherehythc (lillieulties usually encountered in cutting rubber impregnated Fabric are avoided.

I claim:

l. A machine of the character described, rol'uprising two rotatable over-lapping: euttin; disks, parallel on thei abutting faces, one of mi l disks having pointed serrated slitting teeth.

The eombinalion of a pair of disks having cutting edges arranged in overlapping shearing relation, one of the disks having a continuous kuil'e edge beveled on one face only and the other having: pointed serrated wutliug teeth, the serrations beveled on one face only, and means to drive the disks, substantially as described.

The combination of a pair of disks havcutting edges arranged in overlapping .shearing relation, one ofthe disks haizin a continuous knife edge beveledon one ace only and the other having pointed serratedcutting edges, the serrations beveled on one v face only, the opposed fsoes'of the disksin v f their contact area being in s bstantially parallel planes, and means to drive the disks,

substantially as described;

I LIAM CqSTEVENS;

-Witnesss: r

R. E. GLASS, S. G. .C. 

